Commit 631d4efb authored by Christoph Hellwig's avatar Christoph Hellwig Committed by Jens Axboe
Browse files

block: add a queue_limits_set helper 



Add a small wrapper around queue_limits_commit_update for stacking
drivers that don't want to update existing limits, but set an
entirely new set.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20240228225653.947152-2-hch@lst.de


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 86b1e613

block/blk-settings.c

+18 −0
Original line number Diff line number Diff line
@@ -266,6 +266,24 @@ int queue_limits_commit_update(struct request_queue *q, 
}

EXPORT_SYMBOL_GPL(queue_limits_commit_update);



/**

 * queue_limits_commit_set - apply queue limits to queue

 * @q:		queue to update

 * @lim:	limits to apply

 *

 * Apply the limits in @lim that were freshly initialized to @q.

 * To update existing limits use queue_limits_start_update() and

 * queue_limits_commit_update() instead.

 *

 * Returns 0 if successful, else a negative error code.

 */

int queue_limits_set(struct request_queue *q, struct queue_limits *lim)

{

	mutex_lock(&q->limits_lock);

	return queue_limits_commit_update(q, lim);

}

EXPORT_SYMBOL_GPL(queue_limits_set);



/**

 * blk_queue_bounce_limit - set bounce buffer limit for queue

 * @q: the request queue for the device

include/linux/blkdev.h

+1 −0
Original line number Diff line number Diff line
@@ -889,6 +889,7 @@ queue_limits_start_update(struct request_queue *q) 
}

int queue_limits_commit_update(struct request_queue *q,

		struct queue_limits *lim);

int queue_limits_set(struct request_queue *q, struct queue_limits *lim);



/*

 * Access functions for manipulating queue properties